/usr/include/mapnik/wkt/wkt_grammar.hpp is in libmapnik-dev 2.2.0+ds1-6build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2011 Artem Pavlenko
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
#ifndef MAPNIK_WKT_GRAMMAR_HPP
#define MAPNIK_WKT_GRAMMAR_HPP
#include <boost/assert.hpp>
#include <boost/ptr_container/ptr_vector.hpp>
// spirit::qi
#include <boost/spirit/include/qi.hpp>
// spirit::phoenix
#include <boost/spirit/include/phoenix_function.hpp>
#include <boost/spirit/include/phoenix_core.hpp>
#include <boost/spirit/include/phoenix_operator.hpp>
#include <boost/spirit/include/phoenix_fusion.hpp>
#include <boost/spirit/include/phoenix_object.hpp>
#include <boost/spirit/include/phoenix_stl.hpp>
// mapnik
#include <mapnik/geometry.hpp>
namespace mapnik { namespace wkt {
using namespace boost::spirit;
using namespace boost::fusion;
using namespace boost::phoenix;
struct push_vertex
{
template <typename T0,typename T1, typename T2, typename T3>
struct result
{
typedef void type;
};
template <typename T0,typename T1, typename T2, typename T3>
void operator() (T0 c, T1 path, T2 x, T3 y) const
{
BOOST_ASSERT( path!=0 );
path->push_vertex(x,y,c);
}
};
struct close_path
{
template <typename T>
struct result
{
typedef void type;
};
template <typename T>
void operator() (T path) const
{
BOOST_ASSERT( path!=0 );
path->close_path();
}
};
struct cleanup
{
template <typename T0>
struct result
{
typedef void type;
};
template <typename T0>
void operator() (T0 & path) const
{
if (path) delete path,path=0;
}
};
template <typename Iterator>
struct wkt_grammar : qi::grammar<Iterator, boost::ptr_vector<mapnik::geometry_type>() , ascii::space_type>
{
wkt_grammar()
: wkt_grammar::base_type(geometry_tagged_text)
{
using qi::no_case;
using qi::_1;
using qi::_2;
using boost::phoenix::push_back;
geometry_tagged_text = point_tagged_text
| linestring_tagged_text
| polygon_tagged_text
| multipoint_tagged_text
| multilinestring_tagged_text
| multipolygon_tagged_text
;
// <point tagged text> ::= point <point text>
point_tagged_text = no_case[lit("POINT")] [ _a = new_<geometry_type>(Point) ]
>> ( point_text(_a) [push_back(_val,_a)]
| eps[cleanup_(_a)][_pass = false])
;
// <point text> ::= <empty set> | <left paren> <point> <right paren>
point_text = (lit("(") >> point(SEG_MOVETO,_r1) >> lit(')'))
| empty_set
;
// <linestring tagged text> ::= linestring <linestring text>
linestring_tagged_text = no_case[lit("LINESTRING")] [ _a = new_<geometry_type>(LineString) ]
>> (linestring_text(_a)[push_back(_val,_a)]
| eps[cleanup_(_a)][_pass = false])
;
// <linestring text> ::= <empty set> | <left paren> <point> {<comma> <point>}* <right paren>
linestring_text = points(_r1) | empty_set
;
// <polygon tagged text> ::= polygon <polygon text>
polygon_tagged_text = no_case[lit("POLYGON")] [ _a = new_<geometry_type>(Polygon) ]
>> ( polygon_text(_a)[push_back(_val,_a)]
| eps[cleanup_(_a)][_pass = false])
;
// <polygon text> ::= <empty set> | <left paren> <linestring text> {<comma> <linestring text>}* <right paren>
polygon_text = (lit('(') >> linestring_text(_r1)[close_path_(_r1)] % lit(',') >> lit(')')) | empty_set;
//<multipoint tagged text> ::= multipoint <multipoint text>
multipoint_tagged_text = no_case[lit("MULTIPOINT")]
>> multipoint_text
;
// <multipoint text> ::= <empty set> | <left paren> <point text> {<comma> <point text>}* <right paren>
multipoint_text = (lit('(')
>> ((eps[_a = new_<geometry_type>(Point)]
>> (point_text(_a) | empty_set) [push_back(_val,_a)]
| eps[cleanup_(_a)][_pass = false]) % lit(','))
>> lit(')')) | empty_set
;
// <multilinestring tagged text> ::= multilinestring <multilinestring text>
multilinestring_tagged_text = no_case[lit("MULTILINESTRING")]
>> multilinestring_text ;
// <multilinestring text> ::= <empty set> | <left paren> <linestring text> {<comma> <linestring text>}* <right paren>
multilinestring_text = (lit('(')
>> ((eps[_a = new_<geometry_type>(LineString)]
>> ( points(_a)[push_back(_val,_a)]
| eps[cleanup_(_a)][_pass = false]))
% lit(','))
>> lit(')')) | empty_set;
// <multipolygon tagged text> ::= multipolygon <multipolygon text>
multipolygon_tagged_text = no_case[lit("MULTIPOLYGON")]
>> multipolygon_text ;
// <multipolygon text> ::= <empty set> | <left paren> <polygon text> {<comma> <polygon text>}* <right paren>
multipolygon_text = (lit('(')
>> ((eps[_a = new_<geometry_type>(Polygon)]
>> ( polygon_text(_a)[push_back(_val,_a)]
| eps[cleanup_(_a)][_pass = false]))
% lit(','))
>> lit(')')) | empty_set;
// points
points = lit('(')[_a = SEG_MOVETO] >> point (_a,_r1) % lit(',') [_a = SEG_LINETO] >> lit(')');
// point
point = (double_ >> double_) [push_vertex_(_r1,_r2,_1,_2)];
// <empty set>
empty_set = no_case[lit("EMPTY")];
}
// start
qi::rule<Iterator,boost::ptr_vector<geometry_type>(),ascii::space_type> geometry_tagged_text;
qi::rule<Iterator,qi::locals<geometry_type*>,boost::ptr_vector<geometry_type>(),ascii::space_type> point_tagged_text;
qi::rule<Iterator,qi::locals<geometry_type*>,boost::ptr_vector<geometry_type>(),ascii::space_type> linestring_tagged_text;
qi::rule<Iterator,qi::locals<geometry_type*>,boost::ptr_vector<geometry_type>(),ascii::space_type> polygon_tagged_text;
qi::rule<Iterator,boost::ptr_vector<geometry_type>(),ascii::space_type> multipoint_tagged_text;
qi::rule<Iterator,boost::ptr_vector<geometry_type>(),ascii::space_type> multilinestring_tagged_text;
qi::rule<Iterator,boost::ptr_vector<geometry_type>(),ascii::space_type> multipolygon_tagged_text;
//
qi::rule<Iterator,void(geometry_type*),ascii::space_type> point_text;
qi::rule<Iterator,void(geometry_type*),ascii::space_type> linestring_text;
qi::rule<Iterator,void(geometry_type*),ascii::space_type> polygon_text;
qi::rule<Iterator, qi::locals<geometry_type*>, boost::ptr_vector<geometry_type>(),ascii::space_type> multipoint_text;
qi::rule<Iterator, qi::locals<geometry_type*>, boost::ptr_vector<geometry_type>(),ascii::space_type> multilinestring_text;
qi::rule<Iterator, qi::locals<geometry_type*>, boost::ptr_vector<geometry_type>(),ascii::space_type> multipolygon_text;
//
qi::rule<Iterator,void(CommandType,geometry_type*),ascii::space_type> point;
qi::rule<Iterator,qi::locals<CommandType>,void(geometry_type*),ascii::space_type> points;
qi::rule<Iterator,ascii::space_type> empty_set;
boost::phoenix::function<push_vertex> push_vertex_;
boost::phoenix::function<close_path> close_path_;
boost::phoenix::function<cleanup> cleanup_;
};
template <typename Iterator>
struct wkt_collection_grammar : qi::grammar<Iterator, boost::ptr_vector<mapnik::geometry_type>(), ascii::space_type>
{
wkt_collection_grammar()
: wkt_collection_grammar::base_type(start)
{
using qi::_1;
using qi::_val;
using qi::no_case;
using boost::phoenix::push_back;
start = wkt | no_case[lit("GEOMETRYCOLLECTION")]
>> (lit("(") >> wkt % lit(",") >> lit(")"));
}
qi::rule<Iterator,boost::ptr_vector<mapnik::geometry_type>(),ascii::space_type> start;
wkt_grammar<Iterator> wkt;
};
template <typename Iterator>
struct wkt_stream_grammar : qi::grammar<Iterator, boost::ptr_vector<mapnik::geometry_type>(), ascii::space_type>
{
wkt_stream_grammar()
: wkt_stream_grammar::base_type(start)
{
start = *wkt_collection;
}
qi::rule<Iterator,boost::ptr_vector<mapnik::geometry_type>(),ascii::space_type> start;
wkt_collection_grammar<Iterator> wkt_collection;
};
}}
#endif // MAPNIK_WKT_GRAMMAR_HPP
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